DW.COM - Sci-Tech

CT scans are vital for effectively diagnosing problems with bones, muscles, organs and blood vessels. But overuse could be the cause of 1 in 20 cancers, according to a US study.

How safe are braids and synthetic hair extensions? Consumer investigations in the United States have raised concerns, claiming to have detected cancer-causing agents in all products tested.

Clobazam, an anti-anxiety drug, is polluting our waterways. A Swedish study found traces of the drug had altered the way wild Atlantic salmon migrate.

Scientists writing in the New England Journal of Medicine said a genetic test using saliva is more accurate than a PSA blood test to assess prostate cancer risk.

Several countries don't import US chicken rinsed in chlorine or beef products containing growth hormones. The Trump administration has used the bans to justify higher trade tariffs. Is US meat safe to eat?

Researchers studying people's brain activity when looking at abstract art have revealed why we interpret blobs of paint on canvas so differently.

British Netflix series "Adolescence" has sparked discussion about the internet, smartphones and teens' mental health. Does the online world really harm teenagers’ health? Researchers have clear advice.

More than 130 million pieces of space debris orbit Earth. If just one piece collides with a spacecraft, it can disrupt critical navigation systems. The European Space Agency is calling for urgent action.

Get off your phone to sleep better, say scientists. An hour of screen use in bed increases insomnia risk and lowers sleep duration by an average of 24 minutes per night, according to a survey of 45,000 Norwegians.

A new drug that makes human blood poisonous to mosquitoes could be a vital new tool to fight malaria. The drug, called nitisinone, kills mosquitoes but is not toxic to humans.